Title :
Equivalent circuit analysis of helix-loaded waveguide for Gyro-TWTs
Author :
Kartikeyan, M.V. ; Sinha, A.K. ; Thumm, Manfred K.
Author_Institution :
IHM, Forschungszentrum Karlsruhe GmbH, Germany
fDate :
2/1/2002 12:00:00 AM
Abstract :
An equivalent circuit analysis has been developed for the fast modes of helix-loaded waveguides. A generalized helix-loaded structure with dielectric supports and radial vanes is taken for analysis purpose and its equivalent circuit parameters for non-azimuthally symmetric fast modes are deduced. This analysis is useful in finding the transmission line parameters for asymmetric modes as well as the cold dispersion relation for the interaction structure without the requirement of solving a complex determinantal equation given in earlier field analytical techniques
Keywords :
equivalent circuits; helical waveguides; transmission lines; travelling wave tubes; asymmetric modes; azimuthally symmetric fast modes; cold dispersion relation; complex determinantal equation; dielectric supports; electric fields; equivalent circuit analysis; equivalent circuit parameters; field expressions; generalized helix loaded structure; gyro-TWTs; gyro-travelling wave tubes; helix-loaded waveguide; interaction structure; nonazimuthally symmetric fast modes; radial vanes; surface currents; transmission line parameters; Bandwidth; Blades; Boundary conditions; Circuit analysis; Dielectric devices; Dispersion; Distributed parameter circuits; Equivalent circuits; Permittivity; Propagation constant;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2002.1003882
